Waterproof storage bag

ABSTRACT

A waterproof storage bag which comprises a bag body having an open end and a bag opening provided at the open end of the bag body to seal the bag body. The bag opening has inner surfaces which are smooth surfaces made of smooth and soft plastic material and the inner surfaces do not contain any self-adhesive material and are not disposed with any additional adhesive material thereon. A multi-porous resilient member is provided inside the bag body. It is an object of the present invention to provide a waterproof bag which could indicate to a user whether its waterproof function is still functioning properly. It has the advantages of simple structure, easy operation and low manufacturing costs.

BACKGROUND OF THE INVENTION

The present invention relates to a storage bag and specifically relatesto a waterproof storage bag being a commodity used in daily life.

Currently, a waterproof storage bag generally comprises a bag body and asealable opening. After a user has put an object such as a mobile phone,a camera or a portable personal computer into the bag body, the usercould simply close the sealable opening so that water outside the bagbody would not be able to enter the bag body. In general, the sealableopening could be tightened by a zipper. However, if a user inadvertentlyfails to fasten the zipper completely, or if the user fails to noticethat the zipper is broken due to long-term use, water outside the bagbody would then enter the bag body. As a result, the object inside thebag body would get wet and thus damaged. Therefore, there is a marketdemand for a waterproof bag which could indicate to a user whether itswaterproof function is still functioning properly after the user has putan object inside the bag body and before the user puts the bag body intowater.

BRIEF SUMMARY OF THE INVENTION

In view of the aforesaid disadvantages now present in the prior art, itis an object of the present invention to provide a waterproof bag whichcould indicate to a user whether its waterproof function is stillfunctioning properly. It has the advantages of simple structure, easyoperation and low manufacturing costs.

In order to attain the above object, the present invention adopts thefollowing technical proposal:

A waterproof storage bag comprising a bag body having an open end and abag opening provided at the open end of the bag body to seal the bagbody; the bag opening has inner surfaces which are smooth surfaces madeof smooth and soft plastic material and the inner surfaces do notcontain any self-adhesive material and are not disposed with anyadditional adhesive material thereon; a multi-porous resilient membermade of natural cotton, fiber cotton, chemical fiber cotton, latex foam,natural foam or the like is provided inside the bag body.

The multi-porous resilient member is sized to cover entire surface areaof the bag body or only a partial surface area of the bag body.

The multi-porous resilient member is removably provided inside the bagbody so that it could be inserted or taken out according to user's need;it could also be fixed inside the bag body by means of heat pressing orthe like.

The bag body is made of a compressible and resilient material; thecompressible and resilient material is a plastic material which allowsuser to operate a touch screen of an object disposed inside the bag bodyfrom outside the bag body, for example, polyvinyl chloride (PVC),thermoplastic polyurethane (TPU) silica gel and the like.

The bag opening is generally provided at an upper end of the bag body;the bag opening or the bag body could also be provided with a hangingstring and/or a string hole for increasing portability.

The multi-porous resilient member could be surrounded by anair-permeable member, and the air-permeable member may be made ofair-permeable fabrics or plastic material disposed with pore openings.The air-permeable member is configured as thicker at four sides to leavea recess area in middle part so that an object is easily fixed inposition inside the bag body.

Use of the present invention is described as follows:

Open the bag opening first and put the object into the bag body. Afterthat, press air out of the bag body by hand and the multi-porousresilient member would then be compressed. After the air is pressed out,flatten the bag opening which comprises the smooth inner surfaces byhand or other soft objects so that the inner surfaces adhere to eachother more smoothly. When the inner surfaces at two sides of the bagopening adhere to each other, there is neither air nor space between thetwo inner surfaces. Therefore, the two inner surfaces adhere to eachother smoothly and automatically without any gap left between them sothat water and air cannot pass through. At this time, air or waterdensity as well as air pressure outside the bag body are high, while airpressure inside the bag body is low as there is less air. As a result,the inner surfaces are tightly adhered to each other and the bag body isthen able to remain airtight and watertight.

As long as the bag body remains airtight and watertight, themulti-porous resilient member inside the bag body will not be able toabsorb any air and therefore will not expand. Therefore, user would beable to know if the waterproof function of the bag body is normal byobserving the expansion of the multi-porous resilient member. If theuser's observation prior to disposing the bag body into water is thatthe multi-porous resilient member expands, the user is able to knowimmediately that the bag opening is not sealed properly. As such, theuser could seal the bag opening again, therefore reducing the risk ofdamaging the object inside the bag body due to inflow of water into thebag body. Besides, since the bag body is nearly in a state of vacuuminside, if a product containing an electronic touch screen is disposedinside the bag body, there would not be any spaces left between theelectronic touch screen and an inner surface of one side of the bagbody. Therefore, even though the electronic touch screen is separatedfrom the user by the bag body, the user could still be able to interactwith the electronic touch screen and thus benefit from the convenienceof operating an electronic product underwater. By virtue of the abovedesign, the present invention has the advantages of simple structure aswell as convenience and practicality in terms of use. Vacuum structureof the storage bag according to the present invention attains sealingeffect mainly by mutually and tightly adhered smooth surfaces made ofsmooth and soft plastic material. Since the soft plastic material isrelatively soft in texture and therefore easy to change its shape andrestore its original condition, and since it is easier for smoothsurfaces to adhere to each other and it is not easy to have gaps formedbetween the adhered surfaces, sealing effect is better whereasairtightness and watertightness are maintained for a longer period oftime. Furthermore, the present vacuum storage bag does not contain anyhard components and therefore would not break and damage the objectinside the bag body or other objects adjacent to the bag body.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 illustrates a front view of the first embodiment of the presentinvention.

FIG. 2 illustrates a perspective view of the first embodiment of thepresent invention.

FIG. 3 illustrates a front view of the second embodiment of the presentinvention.

FIG. 4 illustrates a front view of the third embodiment of the presentinvention.

FIG. 5 illustrates a schematic view of the fourth embodiment of thepresent invention.

FIG. 6 illustrates a perspective view of the multi-porous resilientmember of the fourth embodiment of the present invention.

DETAILED DESCRIPTION OF THE INVENTION

The present invention is further described in detail below withreference to embodiments and the accompanying drawings, but the presentinvention is not limited to the description therein.

As illustrated in FIG. 1 and FIG. 2, the first embodiment of the presentinvention comprises a bag body 1 having an open end and a bag opening 2provided at the open end of the bag body 1 to seal the bag body 1. Thebag opening 2 has inner surfaces which are smooth surfaces made ofsmooth and soft plastic material and the inner surfaces do not containany self-adhesive material and are not disposed with any additionaladhesive material thereon. A multi-porous resilient member 3 made ofnatural cotton, fiber cotton, chemical fiber cotton, latex foam, naturalfoam or the like is provided inside the bag body 1. In the presentembodiment, the multi-porous resilient member 3 is made of latex foam.The multi-porous resilient member 3 is sized to cover a partial surfacearea of the bag body 1 and it is removably provided inside the bag body1 so that it could be inserted or taken out according to user's need. Inother embodiments, the multi-porous resilient member 3 could also befixed inside the bag body 1 by means of heat pressing and the like. Thebag body 1 is made of a compressible and resilient material. Thecompressible and resilient material is plastic material which allowsuser to operate a touch screen of an object 4 disposed inside the bagbody 1 from outside the bag body 1. In the present embodiment, thecompressible and resilient material is polyvinyl chloride (PVC). In thepresent embodiment, the bag opening 2 is provided at an upper end of thebag body 1. The bag opening 2 is also provided at an upper middle partwith a string hole 5 for a user to fasten a string for increasingportability. In the present embodiment, the multi-porous resilientmember 3 is surrounded by air-permeable fabrics which is configured asthicker at four sides to leave a recess area in middle part so that anobject is easily fixed in position inside the bag body 1.

Use of the present embodiment is described as follows:

Open the bag opening 2 first and put the object 4 into the bag body 1.After that, press air out of the bag body 1 by hand and the multi-porousresilient member 3 would then be compressed. After the air is pressedout, flatten the bag opening 2 which comprises the smooth inner surfacesby hand or other soft objects so that the inner surfaces adhere to eachother more smoothly. When the inner surfaces at two sides of the bagopening 2 adhere to each other, there is neither air nr space betweenthe two inner surfaces. Therefore, the two inner surfaces adhere to eachother smoothly and automatically without any gap left between them sothat water and air cannot pass through. At this time, air or waterdensity as well as air pressure outside the bag body 1 are high, whileair pressure inside the bag body 1 is low as there is less air. As aresult, the inner surfaces are tightly adhered to each other and the bagbody 1 is then able to remain airtight and watertight.

As long as the bag body 1 remains airtight and watertight, themulti-porous resilient member 3 inside the bag body 1 will not be ableto absorb any air and therefore will not expand. Therefore, user wouldbe able to know if the waterproof function of the bag body 1 is normalby observing the expansion of the multi-porous resilient member 3. Ifthe user's observation prior to disposing the bag body 1 into water isthat the multi-porous resilient member 3 expands, the user is able toknow immediately that the bag opening 2 is not sealed properly. As such,the user could seal the bag opening 2 again, therefore reducing the riskof damaging the object 4 inside the bag body 1 due to inflow of waterinto the bag body 1. Besides, since the bag body 1 is nearly in a stateof vacuum inside, if a product containing an electronic touch screen isdisposed inside the bag body 1, there would not be any spaces leftbetween the electronic touch screen and an inner surface of one side ofthe bag body 1. Therefore, even though the electronic touch screen isseparated from the user by the bag body 1, the user could still be ableto interact with the electronic touch screen and thus benefit from theconvenience of operating an electronic product underwater. By virtue ofthe above design, the present invention has the advantages of simplestructure as well as convenience and practicality in terms of use.Vacuum structure of the storage bag according to the present inventionattains sealing effect mainly by mutually and tightly adhered smoothsurfaces made of smooth soft plastic material. Since the soft plasticmaterial is relatively soft in texture and therefore easy to change itsshape and restore its original condition, and since it is easier forsmooth surfaces to adhere to each other and it is not easy to have gapsformed between the adhered surfaces, sealing effect is better whereasairtightness and watertightness are maintained for a longer period oftime. Furthermore, the present vacuum storage bag does not contain anyhard components and therefore would not break and damage the object 4inside the bag body 1 or other objects adjacent to the bag body 1.

FIG. 3 illustrates the second embodiment of the present invention with astructure identical to that of the first embodiment except for thefollowing: In the present embodiment, the string hole 5 is provided atan upper part of the bag body 1.

FIG. 4 illustrates the third embodiment of the present invention with astructure identical to that of the first embodiment except for thefollowing: In the present embodiment, the string hole 5 is provided atan outer side of the bag opening 2.

FIG. 5 to FIG. 6 illustrate the fourth embodiment of the presentinvention with a structure identical to that of the first embodimentexcept for the following: In the present embodiment, the multi-porousresilient member 3 is sized to cover only a partial area of the bag body1. In other words, the multi-porous resilient member 3 is sized to coveronly three sides of the bag body 1 in a shape of an inverted “U” withoutcovering the middle part of the bag body 1. In other embodiments notillustrated by any figures, the multi-porous resilient member could alsocover only four sides of the bag body without covering the middle partof the bag body.

What is claimed is:
 1. A waterproof storage bag comprising a bag bodyhaving an open end and a bag opening provided at the open end of the bagbody to seal the bag body; characterized in that, the bag opening hasinner surfaces which are smooth surfaces made of smooth and soft plasticmaterial and the inner surfaces do not contain any self-adhesivematerial and are not disposed with any additional adhesive materialthereon; a multi-porous resilient member is provided inside the bagbody.
 2. The waterproof storage bag as in claim 1, characterized inthat, the multi-porous resilient member is made of natural cotton, fibercotton, chemical fiber cotton, latex foam or natural foam.
 3. Thewaterproof storage bag as in claim 1, characterized in that, themulti-porous resilient member is sized to cover entire surface area ofthe bag body.
 4. The waterproof storage bag as in claim 1, characterizedin that, the multi-porous resilient member is sized to cover a partialarea of the bag body.
 5. The waterproof storage bag as in claim 1,characterized in that, the multi-porous resilient member is fixedlyprovided inside the bag body.
 6. The waterproof storage bag as in claim1, characterized in that, the multi-porous resilient member is fixedinside the bag body by heat pressing.
 7. The waterproof storage bag asin claim 1, characterized in that, the multi-porous resilient member isremovably provided inside the bag body.
 8. The waterproof storage bag asin claim 1, characterized in that, the bag body is made of acompressible and resilient material; the compressible and resilientmaterial is a plastic material which allows user to operate a touchscreen of an object disposed inside the bag body from outside the bagbody.
 9. The waterproof storage bag as in claim 1, characterized inthat, the bag opening is provided at an upper end of the bag body. 10.The waterproof storage bag as in claim 1, characterized in that, the bagopening or the bag body is also provided with a hanging string and/or astring hole.